U.S. patent application number 10/638020 was filed with the patent office on 2004-02-19 for flashing for an exterior arched surface and method.
Invention is credited to Kjorsvik, Dale.
Application Number | 20040031210 10/638020 |
Document ID | / |
Family ID | 31720727 |
Filed Date | 2004-02-19 |
United States Patent
Application |
20040031210 |
Kind Code |
A1 |
Kjorsvik, Dale |
February 19, 2004 |
Flashing for an exterior arched surface and method
Abstract
Flashing used on curved exterior wall projections designed to
stop water intrusion and provide a permanent, attractive, paintable
surface that is safe from UV radiation. The flashing includes a
Z-shaped or L-shaped body bonded with a flexible flashing material
along its back surface and front edge. The metal body includes at
least two perpendicularly aligned flange members. Formed on the top
flange member is a plurality of transversely aligned slits evenly
spaced thereon that allow the flashing to be bent around a curved
wall projection. The flexible flashing material is adhesively
bonded to the inside and outside surfaces of the top flange member
thereby covering the slits to create a water barrier. During
installation, the top flange member and flexible flashing material
are covered by external siding.
Inventors: |
Kjorsvik, Dale; (Duvall,
WA) |
Correspondence
Address: |
Dean A. Craine
DEAN A. CRAINE, P.C.
Suite 140
400 112th Avenue NE
Bellevue
WA
98004-5542
US
|
Family ID: |
31720727 |
Appl. No.: |
10/638020 |
Filed: |
August 8, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60404172 |
Aug 15, 2002 |
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Current U.S.
Class: |
52/58 ; 52/85;
52/86 |
Current CPC
Class: |
E06B 1/62 20130101; E04F
19/02 20130101; E04F 2013/061 20130101; E06B 1/006 20130101 |
Class at
Publication: |
52/58 ; 52/85;
52/86 |
International
Class: |
E04D 001/36; E04D
003/38; E04D 013/14; E06B 001/24; E04G 015/02; E04B 001/32 |
Claims
I claim:
1. Flashing for a projecting curved surface, comprising: a. a metal
body having perpendicularly aligned top flange member, intermediate
flange member, and a plurality of transversely aligned slits
partially extending across said top flange member thereby enabling
said top flange member and said intermediate flange member to be
bent around a curved surface by adjusting the openings formed
between said slits; and, b. flexible flashing material attached
over said top flange member surface that covers said slits to
create a water barrier.
2. The flashing, as recited in claim 1, wherein said slits are
shorter in length than the width of said top flange member whereby
creating uncut regions on said top flange member.
3. The flashing, as recited in claim 1, further including a lower
flange member formed on said body on the opposite side of said top
flange member. opposite said slits formed on said lower flange
member.
4. The flashing, as recited in claim 1, further including a
plurality slits formed on said lower flange member that enable said
intermediate flange member to be bent around a curved surface.
5. The flashing, as recited in claim 1, wherein said flexible
flashing material covers the inside surfaces of said top flange
member, and said intermediate flange member.
6. The flashing, as recited in claim 4, wherein said flexible
flashing material covers the inside surfaces of said top flange
member, said intermediate flange member, and said lower flange
member.
7. A method of protecting a curved wall projection, comprising the
following steps: a. selecting a flashing that includes a metal body
with a top flange member and a intermediate flange member, said top
flange member includng a plurality of slits formed thereon that
enable said intermediate flange member to be bent over a curved
surface in a direction opposite said top flange member, said
flashing including a layer of flexible flashing material bonded
over the inside and outside surfaces of said top flange member that
covers said slits; b. positioning said top flange surface adjacent
to a wall surface perpendicularly aligned with a curved wall
projection; c. bending said intermediate flange member over said
curved wall projection, said bending movement causing said slits on
said top flange member to widen; d. securing the flashing over said
curved wall projection; and, e. attaching exterior wall boards over
said top flange member to prevent sunlight exposure of said
flexible flashing material.
Description
[0001] This is a utility patent application which claims benefit of
U.S. Provisional Application No. 60/404,172 filed on Aug. 15,
2002.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] This invention pertains to exterior flashing and, more
particularly, to such flashing designed for use around curved
exterior wall projections.
[0004] 2. Description of the Related Art
[0005] Z- or L-shaped metal flashing is commonly used in the
building industry to prevent the intrusion of water through a joint
on an exterior wall projection, such as a windowsill or doorframe.
Around curved exterior wall projections, slits or V-shaped cutouts
are made on the flange members that enable the flashing to be bent
around a curved surface. Also, flexible flashing made of rubber,
latex, or asphalt-based material has been used that bends around a
curved surface. One drawback with Z- or L-shaped flashing is that
rainwater is able to travel through the slits or cutouts. One
drawback with flexible flashing material is that it slowly
deteriorates when exposed to ultraviolet light.
[0006] What is needed is a flashing made for an arched surface that
is attractive and paintable; can be easily bent around the top
surface of the arched surface; does not allow the intrusion of
water; and, does not deteriorate when exposed to ultraviolet
radiation.
SUMMARY OF THE INVENTION
[0007] It is an object of the present invention to provide an
attractive and paintable flashing for an arched wall
projection.
[0008] It is another object of the present invention to provide
such a flashing that prevents the intrusion of water.
[0009] It is a further object of the present invention to provide
such a flashing when properly installed around an arched wall
projection that does not deteriorate with exposure to ultraviolet
radiation.
[0010] These and other objects of the present invention are met by
a flashing specifically designed for use on an exterior arched wall
projection that stops water intrusion and is resistant to damage
caused by UV radiation. The flashing includes a Z-shaped or
L-shaped body with a flexible flashing material adhesively attached
to its back surface. In the preferred embodiment, the body includes
a top flange member and an intermediate flange member. The top
flange member is relatively wide and includes a plurality of
transversely aligned slits evenly spaced thereon that allow the
intermediate flange member to be bent around a curved or arched
wall projection. In the preferred embodiment, the slits extend
partially and transversely over the top flange member thereby
leaving a small portion of the top flange member uncut. As the
intermediate flange member is bent in a direction opposite the top
flange member around an arched wall projection, the slits' opening
widen so that the intermediate flange member may smoothly conform
in shape to the adjacent arched wall projection. In a second
embodiment, that flashing includes a lower flange member
perpendicularly aligned with the intermediate flange member and
opposite the top flange member. In both embodiments, flexible
flashing material is adhesively bonded to the inside surfaces of
the top, intermediate, and lower flange members and extends over
the outside surface of the top flange member to completely cover
the slits and the expanded slit openings. Because the top flange
member is typically placed under wall siding, the section of
flexible flashing material that covers the slits and slit openings
is protected from ultraviolet radiation. The exposed portion of the
top flange member is attractive and may be easily painted.
[0011] Using the above flashing, a method of protecting an arched
wall projection is also provided.
DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a front elevation view of an arched window with
the flashing disclosed herein attached to its outer surface.
[0013] FIG. 2 is a perspective view of a section of an arched
window showing the flashing.
[0014] FIG. 3 is a side elevation view of the invention shown in
FIG. 2.
[0015] FIG. 4 is a front elevation view of a section of the
flashing.
[0016] FIG. 5 is a rear elevation view of a section of the
flashing.
DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
[0017] Shown in the accompanying FIGS. 1-5, there is shown a
flashing 10 specifically designed for use on an exterior arched or
curved wall projection 52 that stops water intrusion and provides a
permanent, attractive, paintable surface that is safe from UV
radiation. The flashing 10 includes a metal body 12 with flexible
flashing material 40 bonded to its entire back surface 13 and a
portion of its front surface 15. In the preferred embodiment, the
metal body 12 is Z-shaped with top, intermediate and lower flange
members 18, 24, 30, respectively. The top flange member 18 includes
a plurality of transversely aligned slits 20 evenly spaced and
formed thereon that allow the metal body 12 to be continuously bent
in the direction toward the lower flange member 30 for placement
around an existing curved or arched wall projection 52 commonly
found around a window 50. The slits 20 are slightly shorter in
length than the width of the top flange member 18 thereby creating
a continuous, non-cut section located adjacent to the corner
between the top flange member 18 and the intermediate flange member
24. When the intermediate flange member 24 is bent in a direction
opposite the top flange member 18, v-shaped slit openings are
formed. Also formed on the lower flange member 30 are optional
slits 32 designed also to allow the metal body 12 to bend in the
same direction as the flange member 18. The flexible flashing
material 40 is adhesively bonded to the inside surfaces of the top,
intermediate, and lower flange members 18, 24, 30, respectively and
extends slightly over the outside surface of the top flange member
18.
[0018] In the preferred embodiment, the flexible flashing material
is a non-woven, rubber or polyester core with a self-adhering
asphalt layer approximately 30 to 50 mils in thickness. The metal
body 12 is made of steel metal approximately 50 to 100 mils in
thickness. The width and length of the top flange member 18,
intermediate member 24 and lower flange member 30 can vary
depending on the application.
[0019] During use, the metal body 12 is positioned around an arched
wall projection 52 so that the intermediate flange member 24 covers
the horizontal surface on the wall projection 52. The top flange
member 18 is positioned against the wall surface and attached
thereto with nails 58 or suitable connections. As the intermediate
flange member 24 is bent around the wall projection 52, the size of
the slit opening 21 is adjusted. Exterior wall boards 56 are lapped
over the top flange member 18 to protect the flexible flashing
material 40 from ultraviolet radiation.
[0020] Using the above flashing, a method of protecting an exterior
arched wall projection 52 is also provided:
[0021] a. selecting a flashing 10 that includes a body 12 with a
top flange member 18 and a perpendicularly aligned intermediate
flange member 24, said top flange member 18 including a plurality
of transversely aligned slits formed thereon, a flexible flashing
material 40 bonded over the inside and outside surfaces of said top
flange member 18 thereby covering said slits;
[0022] b. positioning said flashing 10 over a curved wall
projection 52 so that said intermediate flange member 24 is
adjacent to the curved wall projection 52 and said top flange
member 18 is position adjacent to a wall perpendicularly aligned
with said curved wall projection 52, said curved wall projection 52
being curved in a direction opposite to top flange member 18 so
that said slits open when said intermediate flange member 24 is
bent around said curved wall projection 24;
[0023] c. securing the flashing 10 over said curved wall projection
52; and,
[0024] d. attaching exterior wall boards 56 over said top flange
member 18.
[0025] In compliance with the statute, the invention described
herein has been described in language more or less specific as to
structural features. It should be understood, however, that the
invention is not limited to the specific features shown, since the
means and construction shown is comprised only of the preferred
embodiments for putting the invention into effect. The invention is
therefore claimed in any of its forms or modifications within the
legitimate and valid scope of the amended claims, appropriately
interpreted in accordance with the doctrine of equivalents.
* * * * *